Available on Tape
and Reel for Pick and
Place Manufacturing. 
USA/Canada:
Toll Free:
Europe: 
(315) 432-8909
(800) 411-6596
+44 2392-232392
 
Model BD2425N5050AHF
Rev B
 
Ultra Low Profile 0404 Balun
50 to 50 Balanced
 
 
Description
 
 
 
 
 
 
 
  The BD2425N5050AHF is a low profile, low impedance sub-miniature
unbalanced to balanced transformer designed for differential inputs and output
locations on modern chipsets targeted at 802.11 b+g, MIMO b+g, Bluetooth, Zigbee,
ULPR and ISM band Applications in an easy to use surface mount package. The
BD2425N5050AHF is ideal for high volume manufacturing and delivers higher
performance than traditional ceramic baluns. The BD2425N5050AHF has an
unbalanced port impedance of 50& and a 50& balanced port impedance.. The
output ports have equal amplitude (-3dB) with 180 degree phase differential. The
BD2425N5050AHF is available on tape and reel for pick and place high volume
manufacturing. 
Detailed Electrical Specifications:
 Specifications subject to change without notice.
 
ROOM (25?/DIV>
??/DIV>
癈)
 
Parameter
Min.
Typ.
Max
Unit
Frequency
2400
 
2500
MHz
Unbalanced Port Impedance
 
50
 
 
Balanced Port Impedance
 
50
 
 
Return Loss
15
23
 
dB
Insertion Loss*
 
0.7
0.9
dB
Amplitude Balance
 
0.3
0.8
dB
Phase Balance
 
3
7
Degrees
CMRR
 
30
 
dB
Power Handling
 
 
0.75
Watts
Features:
 
" 2400  2500 MHz
" 0.56 mm Height Profile
" 50 Ohm to 2 x 25 Ohm
" Low Insertion Loss
" Targeted At 802.11 b+g, MIMO
b+g, Bluetooth, Zigbee, ULPR
and ISM Band Applications
" Surface Mountable
" Tape & Reel
" Non-conductive Top Surface
" RoHS Compliant
" Halogen free
 
Operating Temperature
-55
 
+85
* Insertion Loss stated at room temperature (Insertion Loss is approximately 0.1 dB higher at +85 篊)
Outline Drawing
 
Mechanical Outline
Dimensions are in Inches [Millimeters]
Tolerances are Non-Cumulative
Bottom View (Far-side)
Side View
Top View (Near-side)
Unbalanced Port
GND / DC Feed
+ RF GND
4
3
Designation
Pin
1
2
1
2
3
4
Balanced Port
.041
?004
 [1.04
?.10
]
.041
?004
 [1.04
?.10
]
.022
?002
 [0.56
?.05
]
.020 [0.51]
.020 [0.51]
3x.010
 [0.25]
3x.010
 [0.25]
Balanced Port
.012 [0.30]
.012 [0.30]
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